Blender2FSX/P3D “Set Default Transparent” option?

Hope I’m wording this correctly,

I was having issues with transparent items and found this excellent link which resolved everything. Problem With Custom Trees

Following this routine every time I tested a model was beginning to get tedious, then I discovered that (almost) all of the options could be set in the FSX/P3D Material Settings prior to exporting the model. (What a lifesaver!). I export the model, then opening it in MCX, all of the options are set, except for “Set Default Transparent”. This has to be manually selected every time And then “applied”.

Unless I’m overlooking something, does the “Set Default Transparent” setting not exist in the FSX/P3D Material Settings as an option? Or is it called something else?